Senior Oracle DB Developer

Médiane Système limited; Brussel Hoofdstad; Sur place; EUR 90 000 - 120 000; Plein temps

Avantages offerts par ce poste

Salary package

Leave days

Mobility package

Health insurance

Group insurance

Meal vouchers

Eco-vouchers

Résumé du poste

Médiane Benelux is seeking a Senior Oracle DB Developer to strengthen our rail and infrastructure projects across the Benelux region. You will design data models, implement SQL/PLSQL logic, and optimize performance for mission-critical systems.

The role requires 10+ years of Oracle experience, including 19C, data vault/star schema modeling, and team leadership. Fluency in Dutch or French and English proficiency are essential; you will join a collaborative, Agile environment supporting diverse

Qualifications

• 10+ years of Oracle DB development experience.
• Experience with Oracle 19C.
• Strong relational modeling (ERD, 3NF).
• Data Vault or Star Schema modeling experience.
• SQL & PL/SQL development with performance tuning.
• Experience leading a team of at least 3 people.
• Dutch or French C2, English B2; multilingual capability advantageous.

Responsabilités

• Design and validate 3NF data models.
• Implement data models and business logic using SQL/PLSQL.
• Optimize application and database performance.
• Lead a small team and report progress.
• Collaborate in an Agile environment with CI/CD.

Connaissances

Team Management

Communication skills

Problem solving

Railway IT domain knowledge

Presentation skills

Formation

Bachelor's degree in Computer Science or related field

Outils

Oracle SQL/PL/SQL

GIT

Jira

Data Vault modeling

Star Schema

3NF data modeling

Description du poste

Médiane Benelux: Career Booster!

Since 2017, and with over 35 years of experience in France and Italy, Médiane Benelux is an engineering company specializing in software, electronics, and cybersecurity across key sectors such as Railways, Automotive, Energy, Medical, Aerospace, Space, Telecoms, Industry, and Defense.

What We Offer

• IT consulting and strategy
• Digital transformation and IoT solutions
• Project management and process optimization

As specialists in electronics, development, and embedded systems design, we operate from sensor to cloud.

Why choose Médiane Benelux?

• Human-sized company: Promotes teamwork and collaboration in a dynamic and stimulating environment
• Sharp technical expertise and tailored solutions for each sector
• Talent support: Personalized follow-up, continuous training, and skill development for our employees
• Custom solutions tailored to the specific needs of each client
• Culture of innovation: Participation in innovative and varied projects
• Ecovadis Gold certification: Commitment to equality, well-being, and responsibility
• Human values: Commitment, Respect, Trust, Listening
• "Happy at Work" and "Happy Clients" labels by Choose my Company: A fulfilling work environment and optimal client satisfaction

Job Description

As a Senior Oracle DB Developer, you will work on challenging projects critical to the continuity and performance of a leading railway infrastructure operator. These projects involve consolidating and distributing information related to railway traffic management—covering pre-processing, real-time, post-processing, and back-office operations—to both external (railway companies, foreign infrastructure managers, European platforms) and internal stakeholders (real-time schedule visualization, billing, energy consumption calculation, Big Data systems).

You will contribute to both new developments and maintenance (corrective and evolutionary) of existing applications. Agile software development, source control, continuous integration, and modern development hardware are central to the work environment.

Scope of Work

• Design and validate 3NF data models based on functional analysis.
• Design and validate data models using Data Vault, Star Schema, or other modeling approaches.
• Implement data models and business logic using SQL and PL/SQL.
• Ensure code quality and manage promotion across environments (dev, test, acc, prod).
• Analyze and optimize application and database performance.
• Lead a small team: delegate tasks, discuss approaches, and report progress to technical teams, project leader, and team leader.

Profile / Requirements

• Oracle DB Development: 10+ years
• Oracle 19C Development: 2+ years
• Relational Modeling (ERD, 3NF): 10+ years
• Database Architecture (Data Vault, Star Schema): 10+ years
• SQL & PL/SQL Development: 10+ years
• GIT (Source Code Management): 5+ years
• Scrum/Agile Methodology: 5+ years
• SQL & PL/SQL Query Optimization: 5+ years
• Jira Usage: 5+ years
• Peer Reviewing: 5+ years
• Solution Documentation: 5+ years
• Team Management (minimum 3 people): 5+ years
• Script Management across environments (dev, test, acc, prod): 5+ years
• Database Administration (security, tablespace, schema): 2+ years
• Languages: Dutch or French C2, second national language A2, English B2

Soft Skills

• Knowledge of railway operations and IT domain; understanding of role challenges.
• Ability to integrate into teams while demonstrating values: kindness, courage, positivity, reliability.
• Professional attitude and respect for management.
• Clear and effective communication skills.
• Presentation skills.
• Responsible engagement and commitment for the duration of the contract.

Benefits

• Attractive salary package, additional statutory leave days, mobility package (car or public transport subscription), DKV health insurance, group insurance, meal vouchers, eco-vouchers,